Grating



P. H.'E. SCHERBNER.

GRATING.

APPLICATION FILED MAYZI. 1919.

1,346,426, Patented July 13, 1920.

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6'. m 9 Z/ L\ ah mix 3 INVENTOR gM/z/ 622414 WW ATTORNEY UNITED STATES PATENT orr C-E- ZPAUL H. E. SCHERBNER, OF'NEW YORK, N. Y.

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To all whom it may concern:

Be it known that I, PAUL H. E. SGHERB- NEH, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and.

In order that my invention may be thoroughly understood, I will now proceed to describe same in the following specification, and will then point out the novel features thereof in appended claims.

Figure 1 is a plan view of a portion of a grating which is made according to andembodies my invention.

Fig. 2 is a perspective view of some of the parts of this grating, showing the positions which they-assume before being assembled.

Fig. 3' is a similar perspective view of the same parts shown in their assembled and complete condition.

Fig. i is anelevation showing the slotted member with one of the transverse members shown in section in the position it assumes in being inserted in one of the slots.

Fig. 5 is a perspective view corresponding with Fig. 2, but showing va modified form of construction.

Fig. 6 is an elevation of one of the slotted members with a transverse member secured in one of the slots by another modification of construction, a transverse member in this being shown in section.

Fig. 7 is a sectional plan view of the arrangement shown in Fig. 6, the section of gl lis figure being taken on the line 7--7 of ike characters of reference designate corresponding parts in all of the figures of the drawings.

The grating comprises a plurality of flat metallic strips spaced apart, some running in one direction and others at right angles to the first. For the sake of diflerentiation, I will call those parts which are designated by the reference character 10, longitudinal members, and those designated at 20, the

Specification of Letters Patent.

transverse members. The metal of the longitudinal members is cut away atsp'aced intervals to form vertical slots 11 terminating short of the edges. At the baseof each of Patented July 13,1920.

Application filed May 27, 1919. Serial No. 300,084.

these slots a pair of parallel slits '12are cut through the metal at right angles to the slot 12, and 13 is a vertical cut joining the ends of these slits. The metal between these slits is bent outwardly as at 14, a suflicient amount to permit the insertion of the trans verse members, the width of which is 'approximately the same as the distance from the top of slot 11 to the lower slit l2.

Notches 21 are cut atspacedintervals in the upper edges of the members-20. These notches are of a width approximately the same as the thickness of the members 10 and of a depth approximately the'same as the distance from the top of slots 11 to the up- The parts 14 are bent outwardly along the grain of the metal and bent back again without straining the fibers of the material. They are easily cut and punched outwardly in the same operation as that which cuts the slots 11, and after the transverse members are p0- sitioned, may be easily bent back into the locking position by means of a roller drawnover the surface of the member'lo. Thus a very strong and rigid construction is easily and inexpensively made.

The modification'illustrate'd in Fig. 5 is similar to that described, but in this casethe outwardly bent portions 14 terminate at one edge of the slots 11, when they are bent back into locking position instead of extending beyond the lower ends of the slots, as in the construction shown in Figs. 2, 3 and 4.

Another way of locking the transverse members in position is illustrated in Figs. 6 and 7. In this case, the slots 11 are themselves as long as the width of the transverse members 20. After the transverse members are inserted through the slots and raised up into their final position, the metal of the longitudinal member 10 under the transverse members 20 is punched together,

as shown at 22. This effectively locks the I transverse members passing through said slots, and each provided with spaced notches in its upper edge, and parts of the longitudinal members bent longitudinally under the under edges of the transverse members-to maintainsaid transverse members in positions with the parts thereof adjacent the notches overlapping the longitudinal members at the upper ends of the slots therein.

2. Grating comprising a plurality of'longitudinal members cut away at spaced intervals to form straight slots terminating short of their edges, a plurality of narrower fiat transverse members passing through said slots, and each provided with spaced notches in its upper edge, parts of the longitudinal members at the lower ends of the slots being so constructed that they may be bent outwardly atan angle to the slots to permit the insertion of the transverse members-through the slots, and then bent back under the transversemembers to maintain said transverse membersinpositions with the parts thereof adjacent the notches overlapping the longitudinalcm'embers at the upper ends of the slots therein.

3. Gratingcomprising a plurality of longitudinal inembers cut away at spaced intervals to form straight slots terminating short of their edges, a plurality of narrower flat transverse members passing through said slots, and each provided with spaced notches in its upper edge, and a pair of parallel slits in the longitudinal member from the lower ends of the slots and at right angles thereto, the metal being cut through between said slits at one end of each pair of said slits, so

' that the metal between the slots may be bent outwardly to permit the insertion of the transverse members through the slots and then bent back under the transverse members to maintain said transverse members in positions with the parts thereof adjacent the notches overlapping the longitudinal members at the upper ends of the slots therein.

4. Grating comprising a plurality of longitudinal members cut away at spaced intervals to form straight slots terminating short of their edges, a plurality of narrower fiat transverse members passing through said slots, and each provided with spaced notches in its upper edge, and a pair of parallel slits in the longitudinal member across the lower ends of the slots and at right angles thereto,

the metal being cut through between said slits at one end of each pair of said slits, so that the metal between the slots may be bent outwardly to permit the insertion of the transverse members through the slots and then bent back under the transverse members to maintain said transverse members in positions with the parts thereof adjacent the notches overlapping the longitudinal members of the upper ends of the slots therein,

said metal between the slits extending across the slots under the transverse members.

In witness whereof, I have hereunto set my hand this 23d day of May 1919.

PAUL E. SOHERBNER. 

